Posted on 06/24/2010 7:18:19 PM PDT by Bad~Rodeo
The powerful earthquake that struck Baja California and the southwestern United States in April actually moved an entire California border city, NASA radar images show.
A NASA aircraft flying above the fault system responsible for the April 4 earthquake in Baja California recorded how the quake deformed Earth's surface using radar. The resulting map, overlaid atop a Google Earth image of the region shows major fault systems (red lines), while recent aftershocks are denoted by yellow, orange and red dots.
Calexico, Calif., near the U.S.-Mexico border, moved as much as 2 1/2 feet (80 cm) south and down into the ground due to the magnitude-7.2 earthquake on April 4.
Called the El Mayor-Cucapah earthquake, the temblor was centered 32 miles (52 km) south-southeast of Calexico and was the strongest quake to strike the region in nearly 120 years. Two people were killed and hundreds more were injured.
Shaking and moving
It's not the first time a town has moved. The massive 8.8-magnitude earthquake that struck Chile earlier this year moved the city of Concepción at least 10 feet (3 meters) to the west. That quake was the fifth most powerful temblor in recorded history.
Another example of how quakes move as well as shake: In the 6.9-magnitude 1989 Loma Prieta earthquake, which occurred along the San Andreas Fault in southern California, the Pacific plate moved 6.2 feet (about 2 m) to the northwest and 4.3 feet (1.3 m) upward over the North American plate.
Over the long run, earthquakes and shifting fault lines remake the planet. The slip-sliding motion of the San Andreas fault causes San Francisco
(Excerpt) Read more at livescience.com ...
SAVE FOR LATER
Don’t know about this story.
Lots of bad info in it.
Loma Prieta is nowhere near southern california, Its north of Santa Cruz.
Soon the story will read, Earth Quake move Mexican border to Hollywood & Vine then to Sacramento.
I was just googling Loma Prieta for location, thanks
It’s not the facts, it what it says.
Isn’t that what Dan Rather said?
Nothing about this in the local Coachella Valley news, and we are upstream from Calexico. If the city moved over 2 feet south, then part of it would be in Mexico now!!!
“.... the quake deformed Earth’s surface using radar.”
Interesting science (I suppose) but faulty grammar. And faulty grammar or unclear syntax often betrays fuzzy thinking.
My mother used to correct me with a reference to “throwing the cow over the fence some hay.”
Even though the whole town was said to have moved 2 1/2 feet south, the border fence moved as well, so if anything, the U.S. just got a little larger on the southern border! :)
Ahhhh...1985....San Diego...her name was Linda...
You know some very fine Freepers live here and our Esteemed Host you might want to rethink that post
Poorly written, not wrong. It’s the San Andreas fault which the author descripes as being in southern California. Loma Prieta is just north of center, near the northern limit of San Andreas’ intersection with California.
Which just goes to show, God supports deportment.
I Had a Latin teacher who used that when we got word order screwed up. She called it "Amish talk." Trouble was, I grew up with Amish kids and their parents, and never heard one talk that way.
I live in San Diego and we had Easter day the 7.2 earthquake, which was more powerful than the Haiti quake.
What you are wishing for is saying,
The largest concentration of military in the world, based in San Diego, you will them destruction.
You might want to change forums as FR is based in California.
No Loma Prieta is at least 90 miles from where the San Andreas heads out to sea. Most of the San Andreas is in what is geographically known as Northern California. (Basically that which is north of the ridge line of the Tehachapi)
Also, very little of the plate moved significantly during that quake; just portions in Santa Cruz and Santa Clara counties. The rest of the plate had already made its move long before.
That's always been a crapshoot, depending whether you consider California as having 2 parts or 3. If only two, the dividing line seems extremely flexible, politically as well as physically. Personally I think California has at least four distinctly different parts going from South to North and three East to West.
A more intresting question, from the surveying perspective is : Do all legal property lines need to be redefined for thousands of properties both large and small?
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